Detroit Diesel — Injector Unit Pump Identification Number

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Procedure

1. Injector Unit Pump
2. Injector Unit Pump Identification Number Figure 2-12 Injector Unit Pump Identification Number
3. Consult the minidiag2 manual for service routines.
4. Select routine number 006 – Pump Line Nozzle Change.
5. Enter the unit pump identification Number found on the top of the unit pump.
6. Press enter.
7. Press double-arrow back key. (Rev. 3/04) All information subject to change without notice. 2-16 From Bulletin 2–MBE4000–06 6SE412 0403 Copyright © 2006 DETROIT DIESEL CORPORATION MBE4000 SERVICE MANUAL
8. Turn off key and unplug minidiag2.
9. Install the unit pump. Refer to section 2.1.3. All information subject to change without notice. (Rev. 3/04) 6SE412 0403 Copyright © 2006 DETROIT DIESEL CORPORATION From Bulletin 2–MBE4000–06 2-17
10. Remove both engine trim covers and identify the leaking line. NOTE: The MBE4000 engine has individual heads for each cylinder. To remove the injector line from one cylinder, follow these procedures step by step. To remove all the injector lines, repeat each step in these instructions, as applicable, for all six cylinders. NOTE: Remove only leaking lines. Do not attempt to service good lines that are not leaking.
11. Remove the cylinder head cover for each cylinder head, as required. Refer to section 1.1.1. (Rev. 3/04) All information subject to change without notice. 2-18 From Bulletin 2–MBE4000–06 6SE412 0403 Copyright © 2006 DETROIT DIESEL CORPORATION MBE4000 SERVICE MANUAL
12. From the topside of the engine use the injector line torque wrench adaptor (J-45062) and loosen the injector line nut at the transfer tube. See Figure 2-13.
13. Injector Line Nut, Unit Pump Fitting
14. Injector Line Nut, Transfer Tube Fitting
15. Injector Line
16. Thrust Bolt Figure 2-13 High-Pressure Injector Line Removal / Installation NOTICE: Do not crimp or nick the injector line tubing. Overbending the tubing can close the passage or restrict the flow of fuel. Nicks can cause weak spots that could lead to injector line failure. PERSONAL INJURY To avoid injury from the sudden release of a high-pressure hose connection, wear a face shield or goggles.
17. Using wrench adaptor (J-46371) loosen the injection line at the injector unit pump. Remove and discard the injector line.
18. Remove the transfer tube. Use the wrench adaptor (J-45063) to loosen the thrust bolt. NOTE: Discard the failed high-pressure fuel line and transfer tube. Do not re-use them! All information subject to change without notice. (Rev. 3/04) 6SE412 0403 Copyright © 2006 DETROIT DIESEL CORPORATION From Bulletin 2–MBE4000–06 2-19
19. Before installing the injector line, tighten the thrust bolt, using the thrust bolt torque wrench adaptor, (J-45063). The final torque on the bolt must be 45 N·m (33 lb·ft ).
20. Install the injector line nuts finger-tight at both ends.
21. Using the injector line torque wrench adaptor, (J-45062), tighten the injector line nut at the transfer tube and using wrench adaptor (J-46371) tighten the injector line nut at the unit pump. The final torque on the injector line nuts must be 30 N·m (22 lb·ft).
22. Install the cylinder head cover(s), as removed. Refer to section 1.1.2.
23. Prime the fuel system. Refer to section 11.1.5. (Rev. 3/04) All information subject to change without notice. 2-20 From Bulletin 2–MBE4000–06 6SE412 0403 Copyright © 2006 DETROIT DIESEL CORPORATION MBE4000 SERVICE MANUAL PERSONAL INJURY Diesel engine exhaust and some of its constituents are known to the State of California to cause cancer, birth defects, and other reproductive harm. □ Always start and operate an engine in a well ventilated area. □ If operating an engine in an enclosed area, vent the exhaust to the outside. □ Do not modify or tamper with the exhaust system or emission control system.
24. Run the engine and check for leaks. Tighten the connections as needed.
25. Shut down the engine and install the remaining components. All information subject to change without notice. (Rev. 3/04) 6SE412 0403 Copyright © 2006 DETROIT DIESEL CORPORATION From Bulletin 2–MBE4000–06 2-21
26. Remove the engine trim covers. NOTE: The MBE4000 engine has individual heads for each cylinder. To remove the injector nozzle for one cylinder, do these procedures step by step. To remove all the injector nozzles, repeat each step in these instructions, as applicable, for all six cylinders.

Source: manual:2-mbe4000-06a - Revised Fuel Filter Removal and Installation Procedure.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.